One of the kids gave me a Primos Can call
two years ago at Christmas. I used it last year and had a great time with it. The instructions say that it simulates an estrus doe. However, when I've used it, I've had does "turn up" at the stand looking awfully concerned.
Maybe I'm using it wrong, or the acoustics in my part of the woods might be odd, but I'm convinced that the does think it's a lost fawn. Regardless, I convinced one of them to go home with me last year as a meat doe.